Bright full moon riding free of a cloud bank -- Photo by Ari Heinze

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Clouds can dim the moon by 10 to 100 times easily without rendering it invisible Here it rides clear and bright for a moment -- the exposure on this image is identical to a previous one, where the moon loomed dimly through dark clouds.

Date/Time	February 18, 2011, 20:08 CST
Equipment	Home-built eight-inch F/5 Newtonian telescope plus Nikon D3000 DSLR
Settings	Telescope stopped to about F/20 using cardboard mask. Film speed set to 800 ISO. Exposure time 1/10 sec. White balance auto.
Image processing	Essentially none. Resized for web.
Image dimensions before resizing	3872x2592
Focus	Fair: slight blurring is obvious in the full-resolution raw image.
Motion blur	Insignificant or absent.
Image noise	Moderate: typical for the film-speed setting.
Other technical comments	None.

Copyright 2011 Ari Heinze: all rights reserved.

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